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comparison src/cpu/x86/vm/x86_64.ad @ 1274:2883969d09e7

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6910664: C2: java/util/Arrays/Sorting.java fails with DeoptimizeALot flag Summary: Matcher::float_in_double should be true only when FPU is used for floats. Reviewed-by: never, twisti
author kvn
date Fri, 19 Feb 2010 10:04:16 -0800
parents 97125851f396
children d7f654633cfe
comparison
equal deleted inserted replaced
1273:877a14af58e1 1274:2883969d09e7
2072 2072
2073 // Advertise here if the CPU requires explicit rounding operations to 2073 // Advertise here if the CPU requires explicit rounding operations to
2074 // implement the UseStrictFP mode. 2074 // implement the UseStrictFP mode.
2075 const bool Matcher::strict_fp_requires_explicit_rounding = true; 2075 const bool Matcher::strict_fp_requires_explicit_rounding = true;
2076 2076
2077 // Do floats take an entire double register or just half? 2077 // Are floats conerted to double when stored to stack during deoptimization?
2078 const bool Matcher::float_in_double = true; 2078 // On x64 it is stored without convertion so we can use normal access.
2079 bool Matcher::float_in_double() { return false; }
2080
2079 // Do ints take an entire long register or just half? 2081 // Do ints take an entire long register or just half?
2080 const bool Matcher::int_in_long = true; 2082 const bool Matcher::int_in_long = true;
2081 2083
2082 // Return whether or not this register is ever used as an argument. 2084 // Return whether or not this register is ever used as an argument.
2083 // This function is used on startup to build the trampoline stubs in 2085 // This function is used on startup to build the trampoline stubs in